25278981

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1$

素因数の和:186

約数の個数: 64

約数和(自身を含む): 44728320

約数和(自身を除く): 19449339

約数列:

[1, 3, 7, 13, 21, 29, 31, 39, 87, 91, 93, 103, 203, 217, 273, 309, 377, 403, 609, 651, 721, 899, 1131, 1209, 1339, 2163, 2639, 2697, 2821, 2987, 3193, 4017, 6293, 7917, 8463, 8961, 9373, 9579, 11687, 18879, 20909, 22351, 28119, 35061, 38831, 41509, 62727, 67053, 81809, 92597, 116493, 124527, 245427, 271817, 277791, 290563, 648179, 815451, 871689, 1203761, 1944537, 3611283, 8426327, 25278981]

約数ペア:

[(1, 25278981), (3, 8426327), (7, 3611283), (13, 1944537), (21, 1203761), (29, 871689), (31, 815451), (39, 648179), (87, 290563), (91, 277791), (93, 271817), (103, 245427), (203, 124527), (217, 116493), (273, 92597), (309, 81809), (377, 67053), (403, 62727), (609, 41509), (651, 38831), (721, 35061), (899, 28119), (1131, 22351), (1209, 20909), (1339, 18879), (2163, 11687), (2639, 9579), (2697, 9373), (2821, 8961), (2987, 8463), (3193, 7917), (4017, 6293)]